A Double-Blind, Placebo-Controlled, First-in-Human Study of the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of ZE74-0282 in Healthy Volunteers.
Eilean Therapeutics AU Pty Ltd (A subsidiary of Eilean Therapeutics LLC)
40 participants
Mar 2, 2026
Interventional
Conditions
Summary
This is a double-blind, placebo-controlled, First-In-Human Study of the safety, tolerability, pharmacokinetics, and pharmacodynamics of ZE74-0282 in Healthy Volunteers. Who is it for? You may be eligible for this study if you are aged between 18 to 55 years old and are in good general health without a clinically signifcant medical history. Study details The study will be conducted as a single ascending dose (SAD) study, which will enrol groups of 8 healthy participants at a time to receive a single dose of the study drug. Participants will be divided in up to 5 groups, with each subsequent group receiving a higher dose than the previous one. The study drug is either ZE74-0282 or matching placebo which will be administered only once under fasting or fed conditions with a cup of water. The dose will be increased as we move from Cohort 1 to Cohort 5. Participants will be enrolled in the next dose cohort only after ensuring the previous dose level was safe and well tolerated. The total maximum study duration for participants is 37 days, inclusive of screening and visit windows. It is hoped this research will determine the maximum dose of ZE74-0282 that can be administered safely without causing severe reactions. Once the dose of ZE74-0282 has been determined in healthy volunteers, a trial investigating the efficacy of ZE74-0282 as a treatment for patients with Myeloproliferative neoplasms (MPNs) may proceed.
Eligibility
Inclusion Criteria20
- Adult males and females, 18 to 55 years of age (inclusive) at Screening.
- Body mass index (BMI) is greater than or equal to 18.0 and less than or equal to 32.0 kg/m2, with a body weight less than or equal to 100 kg at Screening.
- Medically healthy (in the opinion of the PI or delegate), as determined by pre-study medical history, and without CS abnormalities including the following:
- a. Physical examination without any clinically relevant findings;
- b. Systolic blood pressure in the range of 90 to 160 mmHg and diastolic blood pressure in the range of 50 to 95 mmHg after resting for 5 minutes in a semi-supine or supine position.
- c. Pulse rate in the range of 45 to 100 beats per minute after 5 minutes resting in a semi-supine or supine position.
- d. Body temperature (tympanic), between 35.5°C and 37.7°C.
- e. Electrocardiogram without CS abnormalities including QTcF less than 450 msec.
- Female volunteers:
- a. Must be of non-childbearing potential that is surgically sterilised (hysterectomy, bilateral salpingectomy, bilateral oophorectomy) at least 6 weeks before the screening visit or postmenopausal (where postmenopausal is defined as no menses for 12 months without an alternative medical cause and a follicle-stimulating hormone [FSH] level consistent with postmenopausal status, per local laboratory guidelines), or
- b. If of childbearing potential, must:
- i. Have a negative pregnancy test at the screening visit and on admission to the study site on Day -1.
- ii. Agree not to attempt to become pregnant or donate ova from signing the ICF until at least 30 days after the last dose of study drug.
- iii. Agree to use adequate contraception (defined as use of a condom by the male partner combined with use of a highly effective method of contraception) from the time of consent/screening until at least 30 days after the last dose of study drug, if not exclusively in a same-sex relationship or abstinent as a committed lifestyle.
- Male volunteers:
- a. Must agree not to donate sperm from signing the ICF until at least 90 days after the last dose of study drug.
- b. If engaging in sexual intercourse with a female partner who could become pregnant, must agree to use adequate contraception (defined as use of a condom combined with use of a highly effective method of contraception rom signing the ICF until at least 90 days after the last dose of study drug.
- c. If engaging in sexual intercourse with a female partner who is not of childbearing potential or a same-sex partner, must agree to use a condom from signing the ICF until at least 5 days after the last dose of study drug.
- Have suitable venous access for blood sampling.
- Willing and able to comply with all study assessments and adhere to the protocol schedule and restrictions.
Exclusion Criteria20
- History of anaphylaxis or other significant allergy which, in the opinion of the PI (or delegate), would interfere with the volunteer’s ability to participate in the study.
- History or presence of CS cardiovascular, pulmonary, hepatic, renal, haematological, gastrointestinal, endocrine, immunologic, dermatologic, psychiatric, or neurological disease/disorder, including any acute illness, within the past 3 months determined by the PI (or delegate) to be clinically relevant.
- History of surgery or hospitalisation within 3 months prior to screening, or surgery planned during the study.
- Any history of malignant disease in the last 10 years (excludes surgically resected skin squamous cell or basal cell carcinoma with histopathologically-confirmed clear margins).
- Presence of clinically relevant immunosuppression from, but not limited to, immunodeficiency conditions such as common variable hypogammaglobulinemia.
- History of risk factors for torsade de pointes (including a family history of long QT syndrome or sudden cardiac death) or a known arrythmia.
- Presence or having sequelae of gastrointestinal, liver (including Gilbert’s syndrome), kidney, or other conditions known to interfere with the absorption, distribution, metabolism, or excretion of drugs.
- Liver function test results elevated more than 1.5-fold above the ULN for gamma glutamyl transferase, bilirubin (total, conjugated and unconjugated), ALP, AST or ALT. Volunteers with ALP and/or ALT/AST above the limits specified may be included, at the discretion of the PI (or delegate), if the levels are unaccompanied by clinical signs and are determined to be normal variants.
- Estimated creatinine clearance less than 60 mL/min using the Cockcroft-Gault formula or serum creatinine greater than 1.5-fold above the ULN.
- A history of or positive test results for human immunodeficiency virus (HIV), hepatitis B surface antigen (HBsAg), or hepatitis C virus (HCV) antibodies at the screening visit.
- Positive drugs of abuse test (for a list of drugs tested refer to Section 11.1.8) or alcohol breath test results at the screening visit and/or on admission to the study site on Day -1. Note that positive carbon monoxide test at Screening is not exclusionary.
- Regular consumption of more than 10 standard alcoholic drinks/week and/or more than 4 standard alcoholic drinks on any one day, where 1 standard drink is 10 g of pure alcohol and is equivalent to 285 mL beer [4.9% Alc/Vol], 100 mL wine [12% Alc/Vol], or 30 mL spirit [40% Alc/Vol]).
- Participants must be nonsmokers for at least 3 months prior to the dose of study drug, have a negative carbon monoxide test at Screening and check-in (Day -1) to the clinical facility and refrain from smoking for the duration of the study. Note that positive carbon monoxide test at Screening is not exclusionary.
- Females who are breastfeeding or are planning to breastfeed from screening until 3 months after the dose of study drug.
- Unable to swallow oral medication.
- Current infection that requires systemically absorbed antibiotic, antifungal, antiparasitic or antiviral medication within 10 days prior to dose of study drug.
- Use of inactivated vaccines within 14 days or live vaccines within 30 days prior to the study drug administration and during the study.
- Participants must not take systemic immunosuppressive (e.g., corticosteroids, methotrexate, azathioprine, cyclosporine) or immunomodulating medications (e.g., interferon) within 28 days or 5 half-lives of any relevant agent(s) (whichever is longer) prior to dosing and during the study.
- Donation of blood or plasma within 30 days prior to dosing of study drug, or loss of whole blood of more than 500 mL within 30 days prior to first dose of study drug, or receipt of a blood transfusion within 1 year of the first dose of study drug.
- Participation in a clinical study of an investigational drug or investigational device within 30 days or 5 half-lives of the investigational drug (whichever is longer) prior to screening.
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Interventions
This is a single site exploratory Phase 1, single dose escalation clinical trial conducted in healthy volunteers. The safety, tolerability, pharmacokinetic (PK), and pharmacodynamic (PD) of ZE74-0282 following oral administration in healthy volunteers will be evaluated using a randomised, double-blind, placebo-controlled trial design. A total of up to 40 healthy volunteers are planned to be enrolled in up to 5 cohorts, with 8 participants per cohort. Eligible participants will be randomised to receive single ascending doses of ZE74-0282 or placebo. Healthy volunteers in each cohort will be screened between Day -28 and Day -2, inclusive, prior to dose administration on Day 1. Participants will be admitted to the clinical facility on Day -1 with dosing to occur on the following day (Day 1) under fasted conditions. Participants will be required to fast overnight for 10hours. Cohort 1 will receive their dose under fasted conditions. Cohorts 2, 3, 4 and/or 5 may receive a single dose of ZE74-0282 or placebo on Day 1 at a dose level of a preceding cohort under fasted or fed conditions based on SRC review of preceding cohorts. For fed conditions, participants will be provided a high fat high calorie breakfast consisting of two fried eggs, two rashers of bacon, two slices of toast with butter, two hash browns and 1 cup of full cream milk. Cohorts, 2,3, 4 and 5 will be assigned to either fasting or fed conditions based on SRC review. Dose escalation will be conducted in in a sequential fashion with lower dose levels evaluated first in the sequence. The starting dose of ZE74-0282 is 100 mg. The dose level for Cohorts 2 to 5 will be decided based on SRC review of blinded safety, and any available PK data from the current and preceding cohort(s). Adherence to intervention will be managed via recording in appropriate drug accountability records.
Locations(1)
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ACTRN12626000214336